作者:Matthew W. Halloran、Caitlin Hudecek、Michael D. Burkart
DOI:10.1021/acs.oprd.3c00216
日期:2023.9.15
A concise methodology for the synthesis of acid hydrazides from carboxylic acids via a continuous flow process in yields ranging from 65 to 91% is described. Using short residence times of between 13 and 25 mins, the conditions proved amenable to a variety of mono- and diacids, including aliphatic, aromatic, and heteroaromatic functionalities. To demonstrate scalability, a large-scale (200 g) synthesis
描述了一种通过连续流动工艺从羧酸合成酰肼的简明方法,收率范围为 65% 至 91%。事实证明,该条件适用于 13 至 25 分钟的短停留时间,适用于各种一元酸和二元酸,包括脂肪族、芳香族和杂芳香族官能团。为了证明可扩展性,在连续 9 小时的时间内进行了壬二酸二酰肼的大规模(200 克)合成,总产率为 86%,相当于 22 克/小时的产量。